Microphone with binary output indicating ambient sound, available from SparkFun Electronics.
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Latest commit 5ab91c0 Jul 21, 2017



Sound Detector
Sound Detector

Electret microphone with multiple outputs.

  • First output is the actual audio
  • Second output is the amplitude envelope
  • Third output is a binary "sound present" indication - high while sound is present, low otherwise.

Design and firmware files for the VKey Voltage Keypad.

Repository Contents

  • /Documents - Additional design files including LTspice simulation
  • /Hardware - Eagle PCB and schematic files
  • /Production - Production panel file
  • /Software - Arduino example code

License Information

The hardware is released under Creative Commons ShareAlike 4.0 International. The code is beerware; if you see me (or any other SparkFun employee) at the local, and you've found our code helpful, please buy us a round!

Distributed as-is; no warranty is given.

Author: Byron Jacquot @ SparkFun Electonics